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| Number | Title | Issue Date |
| 7429721 | Heating apparatus using electromagnetic wave A heating apparatus using an electromagnetic wave is disclosed, by which cut-of performance of an electromagnetic wave is enhanced by increasing an electromagnetic wave absorption bandwidth having cut-off performance below −70 dB. The present invention includes a ... | 09/30/2008 |
| 7402784 | Microwave oven with multi-stage choke seal A microwave cooker comprises a body having a cooking chamber therein, the cooking chamber having one opened side, a microwave source disposed at the body for supplying microwave to the cooking chamber, a door coupled to the body for opening and closing the cooking c... | 07/22/2008 |
| 7301132 | Heating apparatus using electromagnetic wave A heating apparatus using an electromagnetic wave is disclosed, by which cut-of performance of an electromagnetic wave is enhanced by increasing an electromagnetic wave absorption bandwidth having cut-off performance below −70 dB. The present invention includes a ... | 11/27/2007 |
| 7291819 | Heating apparatus using electromagnetic wave A heating apparatus using an electromagnetic wave is disclosed, by which a capacity of a cavity is increased and by which cut-off performance of the electromagnetic wave and facilitation of door cleaning can be enhanced. The present invention includes a door provide... | 11/06/2007 |
| 7126097 | Electric oven and choking structure for the same Disclosed is an electric oven including an outer case, a cavity formed in the outer case to receive food, an operating part formed on the outer case to operate the oven, a heater formed to transmit heat into the cavity, a magnetron for oscillating microwave to heat ... | 10/24/2006 |
| 7099057 | In-line holographic mask for micromachining A method of fabricating a holographic mask includes the steps of providing an illumination source and a non-opaque object mask. The source is for generating a coherent illumination beam directed along an axis. The object mask is capable of transmitting a portion of ... | 08/29/2006 |
| 7078661 | Apparatus for shielding electromagnetic wave of microwave oven door A microwave oven door, and more particularly, an apparatus for shielding electromagnetic wave that compensates for the length of slots formed in an end of an oven door in order to improve the shielding ability capable of preventing the leakage of electromagnetic wav... | 07/18/2006 |
| 6927374 | Door assembly of microwave oven A door assembly for a microwave or electric oven in which an optimum microwave-shielding frequency is not changed even though an incident angle of microwaves is changed, to enhance a user's convenience in cleaning a door. The door assembly for a microwave oven inclu... | 08/09/2005 |
| 6867404 | Microwave sealing structure and microwave oven having the same A microwave sealing structure prevents leakage of microwave to the outside of the cavity in which microwave resonates, in an apparatus using microwave which includes a cavity in which an internal space is formed so that microwave can resonate having an opening, and ... | 03/15/2005 |
| 6812442 | Microwave oven door with choke structure A door of a microwave oven comprising: a door panel which is installed on a front surface of a casing having a cavity corresponding to a cooking space of food to be opened and closed; a door frame which is combined with the door panel to be located at a front of the... | 11/02/2004 |
| 6538241 | Microwave oven with microwave seal A microwave oven for heating of foodstuffs including an oven cavity (4) with an opening, a microwave unit for feeding microwaves to the oven cavity, an openable door adapted to close the opening and constituting one of the walls of the cavity, and a micro... | 03/25/2003 |
| 5973305 | Microwave oven door having a microwave shielding structure A choke structure of microwave oven door which can effectively protect a human body by shielding the microwave leakage to outside is disclosed. The choke structure comprises a drawn side wall provided by bending from the sealing surface opposite to the fr... | 10/26/1999 |
| 5824999 | Microwave leakage-preventing device for a microwave oven A microwave oven door includes a shielding panel, which is made of a material through which microwaves cannot pass, having a contact section that opposes a front panel of the oven when the door is closed. A plurality of slits arranged in the contact secti... | 10/20/1998 |
| 5750969 | Microwave choke apparatus for microwave oven A microwave choke apparatus for a microwave oven includes an inner door panel having a plurality of multi-pronged and double-stepped portions extended outwardly therefrom, between which multi-pronged and double-stepped toothed portions there are alternate... | 05/12/1998 |
| 5705797 | Unitary microwave oven door A door for preventing leakage of electromagnetic wave of a microwave oven includes: a front panel forming a front surface of a door; a first contact surface expanded from the circumference of the front panel and recessed forward a cavity of the microwave ... | 01/06/1998 |
| 5418352 | Device for shielding leakage of high frequency waves in a microwave oven A device for shielding a leakage of high frequency waves in a microwave oven, capable of effectively shielding high frequency waves leaked without using any ferrite rubber and reducing the thickness of a door of the microwave oven to achieve a compactness... | 05/23/1995 |
| 5206478 | Microwave shielding for a door of a microwave oven A microwave shielding device for a door of a microwave oven includes a door frame and a choke seal formed integrally and of one piece with the door frame. The door frame includes a stepped portion formed at one side thereof defining a contact surface for ... | 04/27/1993 |
| 5075525 | Wave shielding device for microwave oven A microwave leakage shielding device for a microwave oven includes a seal plate integrally formed with a slit and having a bent surface disposed at a flange by coupling of the flange and the bent surface of the seal plate for obtaining a first shielding e... | 12/24/1991 |
| 5036171 | Electromagnetic wave energy seal arrangement An electromagnetic wave energy seal for a microwave oven comprises a λg/4 choke seal including an internal plate for forming a first capacitive seal, an external plate for forming a recessed chamber with an external plate, a stepped portion having a vert... | 07/30/1991 |
| 4868359 | Radiation sealed door in a microwave heating apparatus A seal on a door for a microwave oven. The seal is a resonant cavity extending along the flange of the oven. The resonant cavity has an offset inlet facing the flange with a dimension less than 2/3 of the distance to the center of the cavity. The cavity i... | 09/19/1989 |
| 4822968 | Electromagnetic energy seal for a microwave oven An electromagnetic energy seal for a microwave oven includes a seal plate fixed on an inner wall of a door frame of the oven which is adapted to form an opening. From an upper end of an outer wall of the door frame, an inwardly bent member is extended. Al... | 04/18/1989 |
| 4794218 | Door assembly for microwave heating apparatus A high frequency heating apparatus has an oven-defining structure having an access opening in communication with a heating chamber defined therein, and a hingedly supported metallic door for selectively opening and closing over the access opening. The doo... | 12/27/1988 |
| 4742201 | Door assembly for microwave heating apparatus A high frequency heating apparatus has an oven-defining structure having an access opening in communication with a heating chamber defined therein, and a hingedly supported metallic door for selectively opening and closing over the access opening. The doo... | 05/03/1988 |
| 4700034 | Electromagnetic energy seal of a microwave oven A microwave leakage shielding apparatus of microwave oven which can cut off the leakage of high-frequency electromagnetic wave as well as that of second harmonic. The slot antenna is installed in such a manner that a serial resonant circuit is provided wi... | 10/13/1987 |
| 4689460 | Absorber device for microwave leakage A microwave absorber device for a microwave heater having a chamber for cooking with an opening, and a door for closing the opening with a small gap which is a leakage path between the door and the wall of the chamber. The door is provided with a choke ca... | 08/25/1987 |
| 4659891 | Microwave oven having an electromagnetic energy seal An electromagnetic energy seal for use in a microwave oven comprises a first sealing cavity formed along at least one of a peripheral edge portion of an entrance opening of a heating chamber and a portion of a door for opening and closing the entrance ope... | 04/21/1987 |
| 4645892 | Sealing arrangement for microwave ovens A sealing arrangement for microwave ovens, comprising an attenuation choke (20) extending around an access opening to an oven cavity and arranged either in the cavity wall portion surrounding the access opening or in the rim portions of a door (19) closin... | 02/24/1987 |
| 4584447 | Electromagnetic wave energy seal arrangement In an apparatus which produces high frequency electromagnetic waves, a choke portion is provided in a leakage transmission path, which choke portion has a groove wall corresponding to a grounded conductor, a number of strip conductors arranged with a line... | 04/22/1986 |
| 4523069 | Microwave oven door seal A microwave oven door seal arrangement for inhibiting microwave energy leakage employs an energy splitting and phase shifting device disposed proximate the door gap formed between the access opening to the oven cavity and the oven door. The energy splitti... | 06/11/1985 |
| 4475023 | Microwave heating apparatus with fundamental and second higher harmonic chokes A microwave heating apparatus having a door equipped with a microwave attenuating cavity constituted by a fundamental wave choke channel and a second higher harmonic choke channel opposing thereto back to back. A wall surface defining the second higher ha... | 10/02/1984 |
| 4471194 | Electromagnetic energy seal for high frequency heating apparatus A microwave oven comprising an enclosure including a wall member defining an opening for providing access to a heating cavity, the wall member having a continuous uninterrupted planar surface portion substantially surrounding the access opening. A door is... | 09/11/1984 |
| 4347420 | Microwave seal structure in microwave oven An improved choke seal arrangement, in a microwave oven, in which a slit structure is provided to prevent leakage of microwave energy around the periphery of the door. The slit structure, which has been provided in one of the walls defining the choke cavi... | 08/31/1982 |
| 4313044 | Slot configuration for choke seal An electromagnetic wave energy seal arrangement for a microwave oven which incorporates juxtaposed conductive surfaces spaced apart by a gap which circumscribes the perimeter of an access opening to the oven cooking cavity. One of the conductive surfaces ... | 01/26/1982 |
| 4211910 | High frequency heating apparatus with improved door arrangement A high requency heating apparatus including a door assembly having a high frequency energy shielding member and a plurality of glass plate members disposed in front and on the outer side of the shielding member. The distances between the shielding member ... | 07/08/1980 |
| 4137441 | Microwave oven door seal system A microwave oven having a door with a peripheral microwave seal structure which is fabricated from one or more die formed aluminum parts and solid dielectric inserts to form a resonant transmission line structure with peripheral oven wall portions, with t... | 01/30/1979 |
| 4102041 | Method of making microwave oven seal structure A microwave oven having a door formed from metal structural elements which are welded together and coated with a nonconductive coating. Solid dielectric portions of the microwave seal choke are inserted into the choke regions of the door seal, and slotted... | 07/25/1978 |
| 4053731 | Microwave energy oven seal An energy seal for microwave oven apparatus having a first energy responsive structure disposed adjacent to a first energy propagation path commencing at the peripheral gap between the oven access opening and door assembly walls. A second structure respon... | 10/11/1977 |
